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Finding the Fourth Proportional to 287,068.43, 430,664.88 and 87,383.60

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Solution

The fourth proportional to 287,068.43, 430,664.88 and 87,383.60 is: 131,094.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,068.43 : 430,664.88 = 87,383.60 : x
  2. Step 2: Convert to fraction form
    287,068.43/430,664.88 = 87,383.60/x
  3. Step 3: Cross multiply
    287,068.43x = 430,664.88 × 87,383.60
  4. Step 4: Simplify right side
    287,068.43x = 37,633,046,054.40
  5. Step 5: Solve for x
    x = 37,633,046,054.40/287,068.43
  6. Step 6: Final answer
    x = 131,094.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.